42076540 divided by 345 
Our goal is to divide 42076540 by 345.

Advancing to step 1:
The number 345 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 345

Advancing to step 2:
The number 345 fits into 42 0 times, leaving a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Append the next digit (0) from the dividend to 42 and continue with: 420 / 345

Moving on to step 3:
420 divided by 345 is 1 with a remainder of 75.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 75 after subtracting 345 from 420.
Bring next digit (7) of the dividend behind the 75 and repeat the process: 757 / 345

On to step 4:
When dividing 757 by 345, we get 2 with a remainder of 67.
The next digit of our result is 2. 
Result so far: 12.0
The remainder is 67 after subtracting 690 from 757.
Grab the next digit (6) from the dividend, add it to 67, then carry on: 676 / 345

Step 5:
If we divide 676 by 345, we get 1 and a remainder of 331.
Record the quotient 1 as the next digit in the result. 
Result so far: 121.0
The remainder is 331 after subtracting 345 from 676.
Include the next digit (5) from the dividend after 331, then repeat: 3315 / 345

Moving on to step 6:
If we divide 3315 by 345, we get 9 and a remainder of 210.
Record the quotient 9 as the next digit in the result. 
Result so far: 1219.0
Deduct 3105 from 3315 and we're left with 210.
Append the next digit (4) from the dividend to 210 and continue with: 2104 / 345

Step 7:
2104 divided by 345 is 6 with a remainder of 34.
Use 6 as the next digit of our solution. 
Result so far: 12196.0
Subtracting 2070 from 2104 leaves us with 34.
Grab the next digit (0) from the dividend, add it to 34, then carry on: 340 / 345

On to step 8:
If we divide 340 by 345, we get 0 and a remainder of 340.
The next digit of our result is 0. 
Result so far: 121960.0
Deduct 0 from 340 and we're left with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

On to step 9:
345 can be fit into 3400 9 times, resulting in a remainder of 295.
The number 9 becomes the next digit in our result. 
Result so far: 121960.9
Subtracting 3105 from 3400 leaves us with 295.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

Let's proceed to step 10:
When dividing 2950 by 345, we get 8 with a remainder of 190.
Record the quotient 8 as the next digit in the result. 
Result so far: 121960.98
The remainder is 190 after subtracting 2760 from 2950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

On to step 11:
1900 divided by 345 is 5 with a remainder of 175.
The number 5 becomes the next digit in our result. 
Result so far: 121960.985
Subtracting 1725 from 1900 leaves us with 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

Let's proceed to step 12:
When dividing 1750 by 345, we get 5 with a remainder of 25.
The next digit of our result is 5. 
Result so far: 121960.9855
If we subtract 1725 from 1750, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The final outcome is 121960.9855, with a leftover of 0.00025.